[antlr-interest] [C Target] Example without treewalker
Shaun Bogan
smbogan at gmail.com
Wed Oct 15 19:11:19 PDT 2008
Is anyone aware of an example for the C target that doesn't use a tree
parser. I prefer to walk the AST myself for my application. I've had
considerable luck using the C# target, but the C target seems to elude
me. I can't even do simple things like print out the text of a node,
etc. If anyone has an example that would help me greatly. Unless I
missed one, none of the examples in the downloads section walk the
tree manually.
Thanks,
Shaun Bogan
On Wed, Oct 15, 2008 at 2:00 PM, <antlr-interest-request at antlr.org> wrote:
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> Today's Topics:
>
> 1. Re: Understanding ANTLR's 'multiple alternatives' (Gavin Lambert)
> 2. Re: VS2008 Integration Example (Gavin Lambert)
> 3. Re: VS2008 Integration Example (Sam Harwell)
> 4. is there any good example can change prolog to .dot file by
> antlr? (Su Zhang)
> 5. Problem with multiple treeparser ... (LdK ^^)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 15 Oct 2008 09:13:53 +1300
> From: Gavin Lambert <antlr at mirality.co.nz>
> Subject: Re: [antlr-interest] Understanding ANTLR's 'multiple
> alternatives'
> To: `VL <vl.homutov at gmail.com>, "antlr-interest at antlr.org"
> <antlr-interest at antlr.org>
> Message-ID: <20081014201402.3E52E3D16ED at www.antlr.org>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> At 07:54 15/10/2008, `VL wrote:
> >Hmm. This looks better. But it doesn't match construction
> >like this: $(VAR)/some/path.
>
> That's a different form than what you were showing before :)
>
> To match that, you can treat them all as equals:
>
> PATH : ('/' | ENVAR | ID | INT)+;
>
> Of course, this no longer guarantees that there is a '/' present
> at all.
>
> Another option specifically for the leading-ENVAR case (basically
> assuming that all paths must be absolute, but the base path may be
> contained in an ENVAR):
>
> PATH : ENVAR? ('/' (ID | INT)*)+;
>
>
> You do need to be careful you're not doing too much work in the
> lexer, though. Remember that the lexer is context-free, and all
> top-level rules are always candidates to match the input. You may
> therefore end up with a different token type than you're
> expecting, if there is overlap between the token rules.
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 15 Oct 2008 09:22:53 +1300
> From: Gavin Lambert <antlr at mirality.co.nz>
> Subject: Re: [antlr-interest] VS2008 Integration Example
> To: "Sam Harwell" <sharwell at pixelminegames.com>, Andr? van der Merwe
> <AndrevdM at pyrogenesis.co.za>, <antlr-interest at antlr.org>
> Message-ID: <20081014202312.DB8E03D16F5 at www.antlr.org>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> At 05:28 15/10/2008, Sam Harwell wrote:
>>Here's how you can get the Clean and Rebuild tasks working as
>>well. If you delete the .tokens files associated with each
>>grammar, then the grammar will get properly rebuilt:
>>
>><PropertyGroup>
>>
>><CoreCleanDependsOn>$(CoreCleanDependsOn);CleanAntlrCode</CoreCleanDependsOn>
>></PropertyGroup>
>><Target Name="CleanAntlrCode">
>> <ItemGroup>
>> <_CleanAntlrFileWrites
>> Include="@(Antlr3->'%(RelativeDir)%(Filename).tokens')" />
>> </ItemGroup>
>> <Message Importance="normal" Text="Antlr: Deleting
>> output files '@(_CleanAntlrFileWrites)'" />
>> <Delete Files="@(_CleanAntlrFileWrites)" />
>></Target>
>
> Wouldn't it be better to remove all the output files, not just the
> .tokens file? You should be able to do that by using this line
> instead (though I haven't tested it):
>
> <Delete Files="%(Antlr3.OutputFiles)" />
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 14 Oct 2008 15:25:01 -0500
> From: "Sam Harwell" <sharwell at pixelminegames.com>
> Subject: Re: [antlr-interest] VS2008 Integration Example
> To: "Gavin Lambert" <antlr at mirality.co.nz>, Andr? van der Merwe
> <AndrevdM at pyrogenesis.co.za>, <antlr-interest at antlr.org>
> Message-ID:
> <86403CA0939415448BCCB83855EFE09A64E5EE at Bloodymary.ironwillgames.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Delete doesn't properly handle ; delimited lists of files. :( Plus we check the generated .cs files into Perforce so it's good to have them around (in our case).
>
> Sam
>
> -----Original Message-----
> From: Gavin Lambert [mailto:antlr at mirality.co.nz]
> Sent: Tuesday, October 14, 2008 3:23 PM
> To: Sam Harwell; Andr? van der Merwe; antlr-interest at antlr.org
> Subject: RE: [antlr-interest] VS2008 Integration Example
>
> At 05:28 15/10/2008, Sam Harwell wrote:
>>Here's how you can get the Clean and Rebuild tasks working as
>>well. If you delete the .tokens files associated with each
>>grammar, then the grammar will get properly rebuilt:
>>
>><PropertyGroup>
>>
>><CoreCleanDependsOn>$(CoreCleanDependsOn);CleanAntlrCode</CoreCleanDependsOn>
>></PropertyGroup>
>><Target Name="CleanAntlrCode">
>> <ItemGroup>
>> <_CleanAntlrFileWrites
>> Include="@(Antlr3->'%(RelativeDir)%(Filename).tokens')" />
>> </ItemGroup>
>> <Message Importance="normal" Text="Antlr: Deleting
>> output files '@(_CleanAntlrFileWrites)'" />
>> <Delete Files="@(_CleanAntlrFileWrites)" />
>></Target>
>
> Wouldn't it be better to remove all the output files, not just the
> .tokens file? You should be able to do that by using this line
> instead (though I haven't tested it):
>
> <Delete Files="%(Antlr3.OutputFiles)" />
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 14 Oct 2008 18:18:01 -0700
> From: "Su Zhang" <westlifezs at gmail.com>
> Subject: [antlr-interest] is there any good example can change prolog
> to .dot file by antlr?
> To: antlr-interest at antlr.org
> Message-ID:
> <e2842950810141818v4b1d124bia85bbd0ea9a2888d at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> question is the same as subject
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> ------------------------------
>
> Message: 5
> Date: Wed, 15 Oct 2008 20:56:16 +0200
> From: "LdK ^^" <elldekaa at gmail.com>
> Subject: [antlr-interest] Problem with multiple treeparser ...
> To: antlr-interest at antlr.org
> Message-ID:
> <b3e94fd60810151156qc50cb17mb7020fe788f94d29 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
> I have a problem when i use multiple treeparser,
> the first is in same file that the parser
> but the second is in a other file and i always get an "" when i make a
> get.text() in this tree parser
> so i dont uderstand, are there any options to share informations ???
> thx a lot,
>
> Herve
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